Ukrainian president Petro Poroshenko and German chancellor Angela Merkel yesterday during the Nato summit in Newport, Wales. Photograph: Facundo Arrizabalaga - Pool/Getty Images

Tougher sanctions against Russia to penalise it for its actions in Ukraine will be announced by Nato leaders today, including curbs on smaller energy(...)

Nato secretary general Anders Fogh Rasmussen tonight said Russia’s move to annex Crimea had put Moscow on a “dangerous path”. Photograph: Niall Carson/PA Wire.

Nato secretary-general Anders Fogh Rasmussen has condemned Russia’s move to annex Ukraine’s Crimea region, saying Moscow had embarked on a “dan(...)

Pro-Russian protesters in a show of defiance during a takeover of the regional parliament building in the eastern Ukrainian city of Donetsk yesterday. Photograph: The New York Times

Russia’s military intervention in Ukraine places it “on the wrong side of history”, US president Barack Obama has said, as Washington, Nato and the(...)

Military action against Syria should remain an option as the international community attempts to enforce proposals for president Bashar Assad’s regime(...)